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asp.net 实现进度条用来显示加载进度或程序处理进度

2016-12-29 00:00 513 查看

private void Page_Load(object sender, System.EventArgs e)
{
beginProgress();
for (int i = 1; i <= 100; i++)
{
setProgress(i);
//此处用线程休眠代替实际的操作，如加载数据等
System.Threading.Thread.Sleep(50);
}

finishProgress();
}

private void beginProgress()
{
//根据ProgressBar.htm显示进度条界面
string templateFileName = System.IO.Path.Combine(Server.MapPath("."), "ProgressBar.htm");
System.IO.StreamReader reader = new System.IO.StreamReader(@templateFileName, System.Text.Encoding.GetEncoding("GB2312"));
string html = reader.ReadToEnd();
reader.Close();
Response.Write(html);
Response.Flush();
}

private void setProgress(int percent)
{
string jsBlock = "<script>SetPorgressBar('" + percent.ToString() + "'); </script>";
Response.Write(jsBlock);
Response.Flush();
}

private void finishProgress()
{
string jsBlock = "<script>SetCompleted();</script>";
Response.Write(jsBlock);
Response.Flush();
}

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" id="mainWindow">
<head>
<title>无标题页</title>
<script language="javascript" type="text/javascript">
function SetPorgressBar(pos) {
//设置进度条居中
var screenHeight = document.body.offsetHeight;
var screenWidth = document.body.offsetWidth;
document.getElementById("ProgressBarSide").style.width = Math.round(screenWidth / 2);
document.getElementById("ProgressBarSide").style.left = Math.round(screenWidth / 4);
document.getElementById("ProgressBarSide").style.top = Math.round(screenHeight / 2);
document.getElementById("ProgressBarSide").style.height = "21px";
document.getElementById("ProgressBarSide").style.display = "";

//设置进度条百分比
document.getElementById("ProgressBar").style.width = pos + "%";
document.getElementById("ProgressText").innerHTML = pos + "%";
}

//完成后隐藏进度条
function SetCompleted() {
document.getElementById("ProgressBarSide").style.display = "none";
}
</script>
</head>
<body>
<div id="ProgressBarSide" style="position:absolute;height:21px;width:100px;color:Silver;border-width:1px;border-style:Solid;display:none">
<div id="ProgressBar" style="position:absolute;height:21px;width:0%;background-color: green"></div>
<div id="ProgressText" style="position:absolute;height:21px;width:100%;text-align:center"></div>
</div>
</body>
</html>

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asp.net 实现进度条 用来显示加载进度或程序处理进度

asp.net 实现进度条用来显示加载进度或程序处理进度